bsc: Check attempted/successful channel requests

Change-Id: I5b5c7c72eea28314da2ee7725d94d85917aa3ad3
Related: SYS#4877
diff --git a/bsc/BSC_Tests.ttcn b/bsc/BSC_Tests.ttcn
index 8934f42..0fd0a17 100644
--- a/bsc/BSC_Tests.ttcn
+++ b/bsc/BSC_Tests.ttcn
@@ -3222,6 +3222,8 @@
 	f_establish_fully(ass_cmd, exp_compl);
 
 	var StatsDExpects expect := {
+		{ name := "TTCN3.bts.0.chreq.total", mtype := "c", min := 1, max := 1},
+		{ name := "TTCN3.bts.0.chreq.successful", mtype := "c", min := 1, max := 1},
 		{ name := "TTCN3.bsc.0.assignment.attempted", mtype := "c", min := 1, max := 1},
 		{ name := "TTCN3.bsc.0.assignment.completed", mtype := "c", min := 1, max := 1}
 	};